3D printing screen frame slope manufacturing method

Abstract

The invention discloses a 3D printing screen frame slope manufacturing method, and belongs to the technical field of dispensing. The method aims to solve the problems of unstable gradient transition, poor surface quality, insufficient precision and the like when a screen frame with gradient is manufactured by an existing 3D printing dispensing technology. The method comprises the following steps: determining a dispensing path according to a product model and setting the dispensing path as a groove path; the printing heights of the slope front section, the slope surface and the slope top section and the dispensing path width are calculated, and the number of printing layers is set; determining the glue outlet flow; calculating dispensing height distribution and speed distribution; carrying out 3D printing operation; and curing the glue. Wherein the groove path is of a structure formed by arranging box dams on the two sides of a dispensing path, the dispensing height and the dispensing speed are variable and are calculated through related formulas respectively, and the number of printing layers is determined by roughness. According to the method, the dispensing parameters can be accurately controlled to adapt to gradient changes, the printing precision and the surface quality are improved, the production flexibility is enhanced, and the method can adapt to manufacturing of different gradients without a special mold.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of dispensing, in particular to a 3D printing screen frame slope manufacturing method, BACKGROUND

[0002] With the development of 3D printing technology, its application in manufacturing industry is more and more widely. However, the existing 3D printing dispensing technology often faces problems such as unstable slope transition, poor surface quality, insufficient precision and the like when manufacturing screen frames with slopes. Because the heights of different positions of the slope are different, the traditional uniform speed and equal height dispensing method cannot adapt to such changes, which is easy to cause glue accumulation or deficiency, thereby affecting the slope quality of the frame.

[0003] Therefore, there is an urgent need for a 3D printing manufacturing method capable of precisely controlling dispensing parameters to adapt to the changes of screen frame slopes. SUMMARY

[0004] In view of the deficiencies in the prior art, the technical problem to be solved by the present application is to provide a 3D printing screen frame slope manufacturing method to improve the printing precision and surface quality of the screen frame slope and enhance the flexibility and efficiency of production.

[0005] To solve the above technical problems, the present application realizes the following scheme: a 3D printing screen frame slope manufacturing method of the present application comprises the following steps:

[0006] Step one, according to the product model with slope, determine the dispensing path through the slope surface, and set the groove path according to the dispensing path, and generate model data;

[0007] Step two, along the path and according to the model data, obtain the 3D printing height h1 of the pre-slope segment printing path, the 3D printing height h2 of the slope surface path, the 3D printing height h3 of the top segment printing path, and measure the width w of the dispensing path;

[0008] Set the number of 3D printing layers;

[0009] Step three, determine the current glue discharge flow Q;

[0010] Step four, calculate the dispensing height distribution and dispensing speed distribution of the dispensing device movement through the parameters of step two and step three;

[0011] Step five, according to the set parameters, perform 3D printing operation;

[0012] Step six, solidify the glue.

[0013] Further, the groove path is a dam structure formed by setting a dam on both sides of the dispensing path.

[0014] Further, in step four, the dispensing height △h is a variable quantity, which is obtained from the following formula:

[0015]

[0016] In formula ①, f represents the roughness of the surface of each layer of glue after dispensing, h1 represents the 3D printing height of the pre-slope section printing path, h2 represents the 3D printing height of the slope section printing path, h3 represents the 3D printing height of the top section printing path, and N represents the number of printing layers.

[0017] The number of printing layers N is determined by the roughness f, and the layer height △h of each layer is determined by the number of printing layers N.

[0018] Further, in step four, the dispensing speed is a variable quantity, which is obtained from the following formula:

[0019] The minimum number of printing layers and the printing height of each layer at each dispensing position are determined according to formula ① and formula ②, and the dispensing speed at different trajectory positions is calculated according to the principle of conservation of mass, and the formula of the dispensing speed is:

[0020]

[0021] In formula ③, v represents the dispensing speed, Q represents the dispensing amount, and w represents the dispensing width. According to formula ③, the dispensing speed of the dispensing device at different positions can be determined, and 3D printing is performed according to the adjusted printing parameters.

[0022] Compared with the prior art, the beneficial effects of the present application are:

[0023] 1. The 3D printing screen frame slope manufacturing method of the present application improves the printing precision of the screen frame slope: the height and width of different sections are obtained along the path and according to the model data, the dispensing height and speed at each position are calculated, which can adapt to the change of the slope, ensure the amount of glue and the forming effect of each part, and make the slope transition smooth and the size accurate.

[0024] 2. The 3D printing screen frame slope manufacturing method of the present application improves the surface quality: since the dispensing height and speed are reasonably set according to the roughness requirement, the problems such as glue accumulation and flowing are reduced, the surface of the printed frame slope is smoother, and the surface roughness is reduced.

[0025] 3. The 3D printing screen frame slope manufacturing method of the present application enhances the production flexibility: without the need to make special molds, different screen frame slopes can be manufactured by adjusting the dispensing parameters. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1This is a schematic diagram of the 3D printing of the stepped dam of the present invention.

[0027] Figure 2 This is a flowchart of the steps in the 3D printing screen bezel slope manufacturing method of the present invention.

[0028] The attached diagram is labeled as follows: Product Model 1, Partial Adhesive Application Section 2, Front Slope Dam 21, Slope Surface Dam 22, and Slope Top Dam 23. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention. Obviously, the embodiments described in this invention are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0031] Example 1: The specific structure of the present invention is as follows:

[0032] Please refer to the appendix. Figures 1-2 The present invention provides a method for manufacturing the slope of a 3D printed screen border, comprising the following steps:

[0033] Step 1: Based on the product model with a slope, determine the dispensing path through the slope, set the dispensing path as a groove, and generate model data.

[0034] Step 2: Along the path and based on the model data, determine the 3D printing height h1 of the printing path at the front of the slope, the 3D printing height h2 of the printing path on the slope surface, and the 3D printing height h3 of the printing path at the top of the slope, and measure the width w of the dispensing path.

[0035] like Figure 1 As shown, the 3D printing height h1 of the printing path in front of the slope corresponds to the dam 21 in front of the slope of the local dotting section 2.

[0036] The 3D printing height h2 of the slope path corresponds to the slope section dam 22 of the local dotting segment 2;

[0037] The 3D printing height h3 of the printing path at the top of the slope corresponds to the dam 23 at the top of the slope in the local dotting section 2;

[0038] Set the number of 3D printing layers;

[0039] Step three, determine the current glue flow Q;

[0040] Step four, calculate the glue height distribution and glue speed distribution of the glue device moving through the parameters of step two and step three;

[0041] Step five, according to the set parameters, carry out 3D printing operation;

[0042] Step six, solidify the glue.

[0043] The groove is a dam structure formed by setting the dam along the two sides of the glue path.

[0044] As Figure 2 shown, Figure 2 is a function distribution diagram of the present application h-w, h represents the glue height obtained by laser scanning at position s, and w represents the glue width.

[0045] In step four, the glue height △h is a variable, which is obtained from the following formula:

[0046]

[0047] In formula ①, f represents the roughness of each layer of glue surface after glue dispensing, h1 represents the 3D printing height of the pre-slope segment printing path, h2 represents the 3D printing height of the slope path, h3 represents the 3D printing height of the top segment printing path, N represents the number of printing layers; h represents the height at different positions, s represents the position coordinate, and h(s) represents the total height at different position coordinates.

[0048] The number of printing layers N is determined by the roughness f, and the layer height △h of each layer is determined by the number of printing layers N.

[0049] In step four, the glue speed is a variable, which is calculated according to the following formula:

[0050] The minimum value of the number of printing layers and the printing height of each layer at each glue dispensing position are determined by formula ① and formula ②, and the glue dispensing speed at different trajectory positions is calculated according to the principle of material conservation, and the formula of the glue dispensing speed is:

[0051]

[0052] In formula ③, v represents the glue dispensing speed, Q represents the glue dispensing amount, and w represents the glue dispensing width. According to formula ③, the glue dispensing speed of the glue dispensing device at different positions can be determined, and 3D printing is carried out according to the adjusted printing parameters. Since △h and position s are related in formula ②, the glue dispensing speed v is also related to position s, and v(s) can reflect the glue dispensing speed at different positions.

[0053] Example 2:

[0054] The 3D printing screen frame slope manufacturing method of the application is further illustrated by data.

[0055] In step one, the glue dispensing path through the slope is determined according to the product model 1 with the slope, and a groove path is set according to the glue dispensing path; the groove path is a dam structure formed by setting a dam on both sides of the glue dispensing path, and the dam can effectively prevent glue from overflowing the preset path during printing.

[0056] In step two, the 3D printing height h1=2mm of the pre-slope section printing path, the 3D printing height h2=3mm of the slope section printing path, and the 3D printing height h3=5mm of the top-slope section printing path are measured by the measuring device along the path, and the width w=4mm of the glue dispensing path is measured; the number of 3D printing layers N is set, if the roughness f=0.05mm of the surface of each layer of glue after glue dispensing is required, i.e., the surface is relatively smooth, then the number of 20 printing layers is calculated according to formulas ① and ②.

[0057] In step three, the current glue dispensing flow rate Q=10mm / s is determined, and the glue dispensing flow rate can be set according to the characteristics of the glue and the printing requirements. 3

[0058] In step four, the glue dispensing height distribution and the glue dispensing speed distribution of the glue dispensing device during movement are calculated according to the parameters in steps two and three.

[0059] Glue dispensing height △h calculation: according to formulas ① and ②, in combination with the measured h1=2mm, h2=3mm, h3=5mm, and the set roughness f=0.05mm, the number of printing layers N=20 is determined, and then the layer height △h of each layer is about 0.25mm, and the △h of different positions will be different according to the change of the slope, so as to ensure that the finally formed slope meets the design requirements.

[0060] Glue dispensing speed v calculation: after the minimum number of printing layers and the printing height of each layer at each glue dispensing position are determined according to formulas ① and ②, the glue dispensing speed v at different trajectory positions is calculated according to the principle of conservation of mass, and the glue dispensing speed v=Q / (w×△h)=10 / (4×0.25)=10mm / s at the position with high height in the top-slope section, and the glue dispensing speed is correspondingly reduced to ensure sufficient amount of glue; the glue dispensing speed at different positions is calculated according to the formula, the layer height is h(s) / N at a position s, N is determined by the roughness, and the number of layers N is the same at different positions, and the printing height h(s) changes, assuming N=20 and △h(s)=h(s) / N=h1 / 20=0.15mm, therefore the glue dispensing speed should be 16.67mm / s to avoid glue accumulation.

[0061] ​Step five, according to the set glue dispensing height distribution and glue dispensing speed distribution and other parameters, the 3D printing device is controlled to carry out printing operation, so that the glue is accumulated according to the preset path and parameters to form the required slope structure.

[0062] Step six, the printed frame slope is cured, and the glue is cured by ultraviolet irradiation for 30s to form a stable structure.

[0063] In summary, the 3D printing screen frame slope manufacturing method improves the printing precision of the screen frame slope: by accurately measuring the height and width of different sections, the glue dispensing height and speed of each position are calculated, which can adapt to the change of the slope, ensure the amount of glue and forming effect of each part, make the slope transition smooth and the size accurate.

[0064] The 3D printing screen frame slope manufacturing method improves the surface quality: since the glue dispensing height and speed are reasonably set according to the roughness requirement, the problems of glue accumulation and flowing are reduced, so that the surface of the printed frame slope is smoother, and the surface roughness is reduced.

[0065] The 3D printing screen frame slope manufacturing method enhances the production flexibility: without making special molds, the screen frame with different slopes can be manufactured by adjusting the glue dispensing parameters.

[0066] The above is only the preferred embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation using the content of the specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A method for manufacturing a 3D printed screen bezel slope, characterized in that, The method comprises the following steps: Step 1: determining a dispensing path through the slope surface according to a product model with slope, setting a groove path according to the dispensing path, and generating model data; Step 2: obtaining a 3D printing height h1 of a pre-slope segment printing path, a 3D printing height h2 of a slope surface path, a 3D printing height h3 of a top-slope segment printing path, and measuring a width w of the dispensing path along the path and according to the model data; setting a 3D printing layer number; Step 3: determining a current dispensing flow Q; Step 4: calculating a dispensing height distribution and a dispensing speed distribution of the dispensing device in movement according to parameters of Step 2 and Step 3; Step 5: performing 3D printing operation according to the set parameters; Step 6: curing the glue.

2. The method of claim 1, wherein the method further comprises: The groove path is a dam structure formed by setting dams on both sides of the dispensing path.

3. The method of claim 1, wherein the method further comprises: In Step 4, the dispensing height △h is a variable quantity, which is obtained by the following formula: In formula ①, f represents roughness of each layer of glue surface after dispensing, h1 represents a 3D printing height of a pre-slope segment printing path, h2 represents a 3D printing height of a slope surface path, h3 represents a 3D printing height of a top-slope segment printing path, and N represents a printing layer number. The printing layer number N is determined by the roughness f, and the layer height △h of each layer is determined by the printing layer number N.

4. The method of claim 3, wherein the 3D printing screen frame slope manufacturing method is characterized by, In Step 4, the dispensing speed is a variable quantity, which is calculated according to the following formula: The minimum printing layer number and the printing height of each dispensing position of each layer are determined according to formula ① and formula ②, and the dispensing speed of different trajectory positions is calculated according to the principle of material conservation, and the formula of the dispensing speed is: In formula ③, v represents the dispensing speed, Q represents the dispensing flow, and w represents the dispensing width. According to formula ③, the dispensing speed of the dispensing device at different positions can be determined, and 3D printing is performed according to the adjusted printing parameters.

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